Phys. Rev. Lett. 77, 1436–1438 (1996)High Energy Processes in Clusters of Galaxies and the Origin of Cosmic RaysReceived 17 April 1996; published in the issue dated 19 August 1996 We test the hypothesis of a universal cosmic ray intensity by calculating the secondary electron or positron production in the hadronic interactions of cosmic ray nuclei with intergalactic gas within clusters of galaxies. We find that the spectral characteristics of the radio synchrotron emission by these secondary electrons is not consistent with observations of the Coma cluster. Thus the hypothesis can be ruled out on cluster scales. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.77.1436
DOI:
10.1103/PhysRevLett.77.1436
PACS:
98.70.Sa, 13.85.Tp, 98.62.Ra, 98.70.Qy
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